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In the multiseam West Pit, Colowyo has utilized the same methods of operation as those of the <br /> East Pit and the same seams were mined. The West Pit is approximately the same size as the <br /> East Pit and mining in the West Pit advanced from north to south. Currently, only reclamation of <br /> the final cut in the West Pit remains. <br /> The Section 16 Pit is located south of the East and West Pits. Mining in the majority of the <br /> Section 16 Pit was completed between 1993 and 2002. A 44-acre extension of the Section 16 Pit <br /> (referred to as the X-Pod area) was permitted through TR-65 (approved on June 29, 2007). The <br /> X-Pod area was mined from 2007-2010. The northern boundary of the Section 16 Pit merged <br /> with the East Pit and the West Pit. Mining of the Section 16 Pit was of the "X" coal seam only. <br /> Mining was from east to west, but was reoriented from north to south for the final strip in the <br /> area. To the south, in the X-Pod area, the Section 16 Pit merged with the South Taylor Pit. <br /> With the approval of PR-02, Colowyo permitted the South Taylor Pit. The South Taylor Pit is a <br /> multi-seam operation that is approved to mine up to 17 coal seams and seam-complexes. The <br /> seams that are mined in the South Taylor Pit are A, B, C, D, E, F and G. The seams range in <br /> thickness from 2.5 feet to 17 feet and the overburden and interburden range in thickness from 2 <br /> feet to 65 feet. The East Taylor Fill is permitted for 19.8 million cubic yards of permanent <br /> excess spoil from this pit. Additionally, Colowyo has permitted the West Taylor Fill for an <br /> additional 27.6 million cubic yards of permanent excess spoil. The Division has approved a <br /> variance from contemporaneous reclamation for the South Taylor Pit due to the mining <br /> conditions. In the past, the overburden and interburden from the upper seams of the South <br /> Taylor Pit have been hauled to two temporary overburden stockpiles (TS West and TS East), <br /> which contain approximately 44 million cubic yards of material. Currently, interburden is being <br /> hauled to previously mined locations of the South Taylor Pit. Final backfilling and grading will <br /> consist of grading the final spoils on the northwest edge of the pit, ripping and reducing the <br /> highwall and hauling back all of the temporary spoil from TS West and TS East into the pit. <br /> Map 29A of the PAP details the spoil grading plan. <br /> The Collom Pit was permitted with the approval of PR-04 and is a multi-seam operation that will <br /> mine the Y, X, A, B, C, E, F, and G seams. A permanent spoil pile will be constructed north of <br /> the Collom Pit as overburden material is stripped. The spoil pile is currently approved for a <br /> placement amount of 26 million cubic yards with a total of approximately 6.6 million cubic yards <br /> remaining permanently. The final surface of the Collom Pit area is shown on Map 19C of the <br /> PAP and will approximate the overall pre-mining grades. <br /> Roads <br /> Four types of roads are utilized at the Mine: haul roads, a prior access road that has been re- <br /> designated as a haul road, an access road, and lightuse roads. <br /> The main haul road (Haul Road A), which runs from the Gossard Loadout to the current facility <br /> area, has been paved with asphalt. Haul Road B is an asphalt road from State Highway 13 to <br /> Proposed Decision and Findings of Compliance January 5,2023 <br /> Permit Renewal No. 8 P a g e 123 <br />